Re: Not a UK plug, but a useless Continental one.
Why would anyone have a "US/EU/A N Other" Plug to UK Socket Adapter ?
Not uncommon !!!
I have had such in the past when I travelled globally with kit that was sourced in the UK.
You can get a Global 'Anything to Anything' Adapter pack that allows you to make the thing you need from standardised interconnecting sub-assemblies.
Also was useful when people from our European or US offices needed to connect their kit and forgot their Adapters. (Always happens when you have no time to replace them.)
Also being a Global company sometimes you had kit that was shipped from another country for various projects.
All the Techies that worked with Customers Globally had the Adapter Kit issued as Standard.
Biting the hand that feeds IT
